Chapter 1.3



Vocabulary


Pangaea: a supercontinent
Continental Drift: the theory that the continents slowly drifted
Fossil: any trace of an ancient organization preserved in rock


Outline



The Theory of Continental Drift

  • Wengner made hypothesis about continents
    • hypothesis is that continents drifted apart
      • hypothesis includes that the continents were once connected
  • finds evidence
    • evidence from landforms-mountain ranges,glacier deposits, coal beds
    • evidence from fossils
      • mesosaurus,lystrosaurus, glossopteris
    • evidence from climate
      • tropical plants in a place with a polar climate
      • galciers in South Africa

Scientists Reject Wegner's Theory

  • Wegner made a new theory of how mountians form
  • Wegner wasn't able to explain how the continents drifted

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